About 45% Starlink odds, weighted to recent UA576 flights. A firm answer comes about 2 days before departure, once the aircraft is assigned.
Based on 187 recent flights; Starlink found in 14 of 38 Wi-Fi checks since Jan 16, 2026 (last N24510, Oct 15, 2026).
Aircraft seen on UA576: Boeing 737 MAX 9, Airbus A321neo, Airbus A320, Boeing 757-300.